“…A lot of studies are now available which compare the educational achievement of children attending single-sex and mixed secondary schools. The results of these studies have been inconsistent, with some providing support for the benefits of mixed schools (Marsh, 1989;Marsh, Smith, Marsh, & Owens, 1988), 79 while others support single-sex education (Astin, 1977;Lee & Bryk, 1986;Riordan, 1985), and yet others finding no achievement differences between children attending single-sex and coeducational schools (Miller & Dale, 1974;Rutter, Maughan, Mortimore, & Outson, 1979). This issue has been further complicated by claims that school type may have and differential effect on girls and boys achievement, with boys tending to perform better in a mixed school environment, while girls tend to fare better in a single-sex school environment (Finn, 1980) Gender parity in formal education is not only a major concern for parents, educators and policy makers, but also a basic human right, a key indicator of achievement of education for all, and a source of economic growth (Bank, Delmont and Marshall, 2007).…”